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MASH-1
MASH-1 (Modular Arithmetic Secure Hash) is a hash function based on modular arithmetic.
Contents
History
Despite many proposals, few hash functions based on modular arithmetic have withstood attack, and most that have tend to be relatively inefficient. MASH-1 evolved from a long line of related proposals successively broken and repaired.
Standard
Committee Draft ISO/IEC 10118-4 (Nov 95)
Description
MASH-1 involves use of an RSA-like modulus M, whose bitlength affects the security. M should be difficult to factor, and for M of unknown factorization, the security is based in part on the difficulty of extracting modular roots. M also determines the block size for processing messages.
MASH-2
There is a new version of the algorithm called MASH-2 with a different exponent. The original <math>e=2</math> is replaced by <math>e=2^8+1</math>.
